Entertainment Reviews:

Variety - 03/08/1978
"...Heston looks courageous..."

Product Description:

The nuclear submarine Neptune is rammed by a Norwegian freighter, plummeting 1,400 feet before coming to rest on a crumbling sea-shelf. Using his untested two-man sub, a diving expert embarks upon a daring rescue attempt. This late-1970s disaster flick features a tense story and better-than-average performances.